chore: release v8.1.1

[oxc-guard]

🤖 New release

• oxc_sourcemap: 8.1.0 -> 8.1.1 (✓ API compatible changes)

Changelog

8.1.1 - 2026-07-06

Other

• restore rust-sourcemap license attribution (#406)
• (deps) update rust crates (#405)
• (deps) update rust crate napi to v3.10.3 (#402)
• (deps) update rust crate napi to v3.10.2 (#401)
• normalize README sponsor section (#397)

---

This PR was generated with release-plz.

[codspeed-hq]

Merging this PR will degrade performance by 3.49%

❌ 2 regressed benchmarks
✅ 18 untouched benchmarks
⏩ 7 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
❌	lookup_token[real_small]	698.9 ns	728.1 ns	-4.01%
❌	lookup_token[real_medium]	953.3 ns	982.5 ns	-2.97%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

---

_{Comparing release-plz-2026-07-03T16-00-15Z (30cd802) with main (527e7a9)}

Footnotes

1. 7 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩